Venn Diagram problems

1. The problem statement, all variables and given/known data
Based of a survey from 500 people come up with this:
130 people prefer spinach
100 people prefer broccoli
50 people prefer carrot
10 people prefer spinach and broccoli
12 people prefer spinach and carrot
5 people prefer broccoli and carrot
15 people prefer all 3 of them

A. How many people prefer broccoli only?
B. How many people prefer none from 3 of it?

Couldnt find it...
130 people prefer spinach
100 people prefer broccoli
50 people prefer carrot
10 people prefer spinach and broccoli
12 people prefer spinach and carrot
5 people prefer broccoli and carrot
15 people prefer all 3 of them